Pour the melted butter, sugar and molasses in a bowl and beat well. Add the egg and beat until smooth. Whisk together the dry ingredients and add to the mixer and mix until just incorporated. Spray a 9x9 pan with cooking spray with flour and press the dough into the pan. Bake at 375 degrees for 12 minutes. Do not over bake. Mine was not done at 12 minutes, I baked(watching carefully) for 16 minutes. Frost with cream cheese frosting if they are around after they cool, which in my case they were not! Enjoy~